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The petiole is a stalk that attaches a leaf to the plant stem. In petiolate leaves the leaf stalk may be long (as in the leaves of celery and rhubarb), or short (for example basil). When completely absent, the blade attaches directly to the stem and is said to be sessile. Subpetiolate leaves have an extremely short petiole, and may appear sessile.
Alliaria petiolata, or garlic mustard, is a biennial flowering plant in the mustard family (Brassicaceae).It is native to Europe, western and central Asia, north-western Africa, Morocco, Iberia and the British Isles, north to northern Scandinavia, [2] and east to northern Pakistan and Xinjiang in western China.
Nepenthes petiolata (/ n ɪ ˈ p ɛ n θ iː z ˌ p iː t i oʊ ˈ l ɑː t ə /; from Latin: petiolatus "petiolate", referring to leaf attachment) is a highland Nepenthes pitcher plant species endemic to Mindanao island in the Philippines, where it grows at an elevation of 1,450–1,900 metres (4,800–6,200 ft) above sea level. [3]
The petiolate leaves strongly resemble the leaves of the common plantain. Pursh himself observed that T. petiolatum "has leaves very much like Plantago major." [7] The scape is 4 to 17 cm (2 to 7 in) long but most of it remains below the surface since the rhizome is deep underground, presumably for protection.
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Perennial plants whose leaves are shed annually are said to have deciduous leaves, while leaves that remain through winter are evergreens. Leaves attached to stems by stalks (known as petioles) are called petiolate, and if attached directly to the stem with no petiole they are called sessile. [19] Ferns have fronds.
Ficus petiolaris, commonly known as the petiolate fig and rock fig, is a fig that is endemic to Mexico from Baja California and Sonora south to Oaxaca. It grows from 10 to 20 feet high. It grows best with moderate water and partial shade. A unique feature is white hairs on the vein axils. [2]
Campanula petiolata is a slender, prostrate to erect herbaceous perennial 10–50 centimeters tall when fully developed. The leaves at the base of the plant (basal leaves) are round to egg shaped in shape, mostly toothed, and usually disappear before the plants flower. [2]